Monsoon causes 60% of Bangkok to face heavy rain risk, flash flood warnings issued

A heavy rain warning has been issued for Thailand, with 60% of Bangkok at risk of downpours. The public has been cautioned about flash flooding. The Department of Meteorology forecasts continued to warn of rainfall and stormy conditions, particularly in the northern, northeastern, and eastern regions.

The department has issued a 24-hour weather forecast warning that the moderate southwestern monsoon is covering the Andaman Sea, Thailand, and the Gulf of Thailand. A monsoon trough is cutting through the upper parts of the northern region and Laos, leading to a low-pressure system over northern Vietnam. As a result, Thailand continues to experience thunderstorms and heavy rainfall. The most impacted areas will be along the monsoon trough, particularly in the northern, northeastern, and eastern regions. Residents in these areas are advised to be on alert for the dangers of heavy rainfall and accumulated rain, which may lead to flash flooding and increased river flow.

Wave height in the upper Andaman Sea is estimated at 2 metres, while the lower Andaman Sea and the upper Gulf of Thailand are expected to have wave heights of 1 to 2 metres. In areas with thunderstorms, wave heights may exceed 2 metres, and boat operators in these regions are advised to exercise caution and avoid travelling in stormy areas.

The weather forecast for Thailand from today at 12am to tomorrow at 12am includes various regions:

Northern region: A 60% chance of thunderstorms and heavy rain in some areas, such as Tak, Mae Hong Son, Chiang Mai, Lamphun, Lampang, and Phetchabun provinces. Minimum temperature 23 to 26 degrees Celsius, maximum 32 to 36 degrees Celsius, and southwesterly winds of 10 to 20 kilometres per hour.

Northeastern region: A 60% chance of thunderstorms and heavy rain in certain areas, such as Nong Khai, Bueng Kan, Udon Thani, Sakon Nakhon, and Nakhon Phanom provinces. Minimum temperature of 24 to 26 degrees Celsius, maximum 33 to 36 degrees Celsius, and southwesterly winds of 10 to 20 kilometres per hour.

Central region: A 40% chance of thunderstorms, mainly in provinces such as Nakhon Sawan, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Songkhram, and Samut Sakhon. The minimum temperature is 24 to 27 degrees Celsius, the maximum 32 to 37 degrees Celsius, and southwesterly winds of 10 to 20 kilometres per hour.

Eastern region: A 60% chance of thunderstorms and heavy rain in some areas, including Nakhon Nayok, Chanthaburi, and Trat provinces. The minimum temperature is 24 to 28 degrees Celsius, the maximum is 31 to 35 degrees Celsius, and southwesterly winds at 15 to 35 kilometres per hour. Sea waves are 1 to 2 metres high and more than 2 metres high in areas with thunderstorms.

Southern region (east coast): A 40% chance of thunderstorms in Phetchaburi, Prachuap Khiri Khan, Nakhon Si Thammarat, Pattani, Yala, and Narathiwat provinces. The minimum temperature is 24 to 26 degrees Celsius, the maximum is 32 to 36 degrees Celsius, and southwesterly winds at 15 to 35 kilometres per hour. Sea waves are 1 to 2 metres and more than 2 metres in areas with thunderstorms.

Southern region (west coast): A 60% chance of thunderstorms in Ranong, Phang Nga, Trang, and Satun provinces. The minimum temperature is 24 to 26 degrees Celsius, the maximum is 31 to 35 degrees Celsius, and southwesterly winds at 20 to 35 kilometres per hour. Sea waves are about 2 metres high and more than 2 metres high in areas with thunderstorms.

Bangkok and surrounding provinces: A 60% chance of thunderstorms and heavy rainfall in some areas. Minimum temperature of 26 to 28 degrees Celsius, maximum 32 to 36 degrees Celsius, and southwesterly winds of 10 to 20 kilometres per hour.